The Newtons Rings can occur in varying degrees from barely noticeable to significantly visible. There is unfortunately very little to be done in terms of re-holdering books which exhibit these rings, as there is no guarantee from the company responsible that the effect will not occur on the re-holdered book to the same degree or more.
If this effect is bothersome to you as a collector, we strongly suggest sending a note to the company responsible for encapsulating the books and urging them to rework their holdering processes to cease the occurrence of this effect. The item "Amazing Spider-Man 300 (CGC 9.8) White pgs Origin/1st full app.
Venom (c#25035)" is in sale since Wednesday, August 21, 2019. This item is in the category "Collectibles\Comics\Copper Age (1984-1991)\Superhero\Spider-Man". The seller is "gdcomics" and is located in Easthampton, Massachusetts. This item can be shipped worldwide.